MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
A Numerical Calculation Method Advantageous for Complex Boundary Problems -An Application to the Pulse Discharge Sintering Process-
Michio YoneyaTamio Ikeshoji
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2001 Volume 42 Issue 11 Pages 2165-2171

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Abstract

A numerical method based on the Method of Fundamental Solutions coupling with the Fourier transformation is presented. The advantage of the new method is demonstrated by solving the nonlinear partial differential equations, which are derived for the simulation of the pulse discharged sintering process to obtain the electric potential and temperature profiles in the system. In this problem, the delta function is revealed at the interface between the different component materials, graphite mold/punch and powder sample. The properties change there as a step function. The efficiency of the method is indicated with regard to solving the problems including the discontinuous functions as a whole without dividing the system to two different material parts. The calculation results showed that the temperature in the system is controlled by the heat conductance from the punch, where a large Joule heat evolution is observed without depending on the sample properties. The calculated temperature in the sample is relatively uniform.

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© 2001 The Japan Institute of Metals and Materials
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